The Games Room

Eleven of them. No accounts, no ads, nothing tracked, and every one works with the aeroplane mode on.

The ones marked four letters are played by more than one person on more than one phone. One of you opens the room and reads out four letters; everybody else types them. That is the whole ritual — no app, no invite link, no sign-in. And every one of them keeps working when whatever mints those four letters is unreachable: there is a camera-and-paste handshake underneath that needs no server at all.

Boards

The Chess Room An engine, an opening book, and somebody to explain what just happened to you. Four letters The Checkers Board English draughts, where jumping is compulsory and that single rule is the whole game. Four letters The Othello Board The discs turn one line at a time, so you can watch what caused it instead of working it out backwards. Four letters The Star Chinese checkers for two to six. The marbles you leave behind are the ladder the rest climb. Four letters

Tables

The Domino Table Partnership dominó with nothing in the boneyard, a real 3D table, and Don Chuy explaining the pass you missed. Four letters The Hearts Table Twenty-six points nobody wants. Take none of them — or take every single one. Four letters The Euchre Table Two jacks worth more than the aces, a partner across the table, and the dealer gets stuck. Four letters

On your own

The Sudoku Room Puzzles graded by the technique they need, and a teacher for each one. Alone The Card Table Klondike where the deal has already been proved winnable before you saw it. Alone The Minefield Minesweeper with the coin toss taken out — every field can be finished by reasoning alone. Alone The Wall A brick breaker with a paddle you aim with rather than a mirror you bounce off. Alone

And elsewhere

The Solving Room A Rubik's cube, scanned with your camera and solved in front of you. Alone The Reading Room A world you can walk around in, loaded straight out of the region files. Alone